import re
from datetime import UTC, datetime
from uuid import UUID, uuid7

from sqlalchemy import DateTime
from sqlmodel import Field, Relationship, SQLModel
from starlette.authentication import BaseUser

from authentication.mixins import (
    OAuth2AuthorizationCodeMixin,
    OAuth2ClientMixin,
    OAuth2TokenMixin,
)
from authentication.utils import bcrypt_sha256_hash


class BaseModel(SQLModel):
    id: UUID | None = Field(primary_key=True, default_factory=uuid7)
    created: datetime = Field(
        default_factory=lambda: datetime.now(tz=UTC),
        sa_type=DateTime(timezone=True),
    )
    updated: datetime = Field(
        default=None,
        nullable=True,
        sa_column_kwargs={
            "onupdate": lambda: datetime.now(tz=UTC),
        },
        sa_type=DateTime(timezone=True),
    )


class User(BaseModel, BaseUser, table=True):
    username: str = Field(unique=True, index=True)
    password: str = Field(nullable=False)

    email: str

    def set_password(self, value):
        self.password = bcrypt_sha256_hash(value)

    def is_authenticated(self) -> bool:
        return True


class Session(BaseModel, table=True):
    user_id: UUID = Field(foreign_key="user.id", exclude=True)
    user: User = Relationship()


class ClientApplication(BaseModel, OAuth2ClientMixin, table=True):
    name: str

    def check_redirect_uri(self, redirect_uri: str) -> bool:
        return any(
            re.fullmatch(re.escape(str(pattern)).replace(r"\*", r"\d+"), redirect_uri)
            for pattern in self.redirect_uris
        )


class AuthCode(BaseModel, OAuth2AuthorizationCodeMixin, table=True):
    user_id: UUID = Field(foreign_key="user.id", ondelete="CASCADE")
    user: User = Relationship()


class AuthToken(BaseModel, OAuth2TokenMixin, table=True):
    user_id: UUID = Field(foreign_key="user.id", ondelete="CASCADE")
    user: User = Relationship()